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A morphological, sedimentological and geophysical investigation of the Woore Moraine, Shropshire, England

By Aidan A. Parkes, Richard I. Waller, Peter G. Knight, Ian G. Stimpson, David I. Schofield and Keith T. Mason


The Bar Hill–Whitchurch–Wrexham Morainic Complex is a large-scale glacial landform thought to represent either the maximum extent or the re-advance of the British–Irish Ice Sheet during the Late Devensian. The origin of the moraine remains uncertain as its key characteristics have not been studied in detail due to a lack of exposures from which its large-scale structure can be determined. The development of new technologies has enabled detailed examination of the topography and internal structure of such large-scale landforms. This paper describes a multi-disciplinary approach involving digital geomorphological mapping using enhanced resolution NextMAP™ digital surface models, geophysical imaging (electrical resistivity tomography) and conventional sedimentological analyses. This combination of techniques is useful for elucidating the origin of a large glacial landform in a region of poor exposure. Digital elevation models such as NextMAP™ offer an efficient and accurate method for landform-mapping, whilst electrical resistivity tomography was able to map the major constituent sediments of the moraine, which had in turn been identified in the single exposure available. Additional geophysical techniques should however be applied to provide further structural data and thereby enable a more detailed interpretation of the moraine's internal structure. Preliminary findings indicate that the moraine is a glaciotectonic landform composed of diamicton and glaciofluvial sediments, an origin consistent with recent suggestions that the Cheshire Plain contained an active ice lobe during the last glacial maximum

Topics: Earth Sciences
Publisher: Elsevier
Year: 2009
DOI identifier: 10.1016/j.pgeola.2009.08.011
OAI identifier:

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